The ultrasonic tank level sensor is completely non-contact measurement. The principle of ultrasonic (sonar) is used to measure liquid level.
HS-2000 External Mounted Ultrasonic Tank Level Sensor- (referred to as “external level gauge”). It adopts advanced signal processing technology and high-speed signal processing chip. It breaks through the influence of container wall thickness. Realizes the height of the liquid level in the closed container True non-contact measurement. The ultrasonic liquid level sensor (probe) is installed directly under the outer wall (bottom) of the container under test. Calibrate the outer wall of the probe. There is no need to open holes for the container to be tested, easy to install, and does not affect production. It can accurately measure the level of various toxic substances, strong acids, strong alkalis and various pure liquids in high-pressure airtight containers. The HS-2000 External Mounted Ultrasonic Tank Level Sensor has no special requirements for the material of the liquid medium and the container. The explosion-proof design is adopted to meet the explosion-proof requirements.
Features of HS-2000 Ultrasonic Tank Level Sensor
- Non-contact measurement function ——– Ultrasonic sensor probe is external. No need to open a hole in the container to be tested.
- Auto-calibration function——–With self-calibration function. It overcomes the problem of reduced accuracy after long-term use of traditional liquid level gauges.
- Infrared online debugging function——–Applicable to occasions where it is not suitable to open the cover for testing in dangerous situations. At the same time, it reduces the difficulty of debugging.
- Self-diagnosis function——–It has its own working status diagnosis function. It also has hardware diagnosis function. It enhances the reliability and stability of the level gauge.
- One-key recovery function——–When the external measuring level gauge works abnormally, it can be restored to the normal state with one key through the debugger.
- Local display and remote transmission function——–The level gauge can not only display the level value on the spot in time. But also remotely transmit it to the control room through the signal line.
Specifications of HS-2000 Ultrasonic Tank Level Sensor-External Mounted
|Measuring range||3m, 5m, 10m, 20m, 30m|
|Short time repetition||1mm|
|Measurement error||±1‰FS (Excessive wall thickness and temperature/pressure instability may affect measurement precision.)|
|Span shift||±10 m|
|Current output||4～20mA，Max load 750Ω|
|Communication interface||RS-485, IrDA|
|Operating ambient temperature for liquid level meter||-30℃～+70℃|
|Operating ambient temperature for ultrasonic probe||-50℃～+100℃|
(Probes with a wider temperature range can be provided upon request）
|Operating ambient humidity||15%～100%RH|
|Explosion proof mark||Ex d ⅡC T6 Gb|
|Housing ingress protection||IP 67|
|Volume percentage display||4-digit OLED display|
|Blind area||There is a small blind area for the liquid level meter that should be noted|
Medium that Ultrasonic Tank Level Sensor can measure
|Liquefied Gas||Liquid Ammonia||Dimethyl ether||Liquid Chlorine||Hydrochloric Acid|
|Propylene||Aqua Carbolisata||Lacquer Thinner||MTBE||Dimethylhydrazine|
|Nmethyl anilineju||Butadiene||Chlorethylene||Light Hydrocarbon||Bromine|
|Anhydrous Hydrogen Fluoride||Toluene||Methylamine||Gasoline||C3|
|Liquefied Carbon dioxide||Xylol||Carbon Dichloride||Epoxyethane||Acetone|
|Plant Oil||Ethanol||Freon||Diethyl Ether||Diesel|
|Ethylene||Sulfuric Acid||Methanol||Kerosene||Nitric Acid|
Ultrasonic Tank Level Sensor’s Application
- Petrochemical industry
- Chemical industry
- Pharmaceutical industry
- Marine industry
- Oil refining industry
- Refrigeration industry
Common medium: liquid ammonia,liquid chlorine, hydrochloric acid, bromine,
chlorethylene,sulfuric acid, freon, and nitirc acid.
Coal chemical industry
Common medium: freon,liquid ammonia, butadiene, H2S.
Common medium : liquefied gas, propylene, ethylene, butadiene, light hydrocarbon, C3.
Power, food, pharmaceutical industries and so on.
In addition to measuring tank level, we also provide Portable Ultrasonic Water Depth Gauge for water depth measurement.
1.Medium’s Purity Degree
Liquids should not contain dense foam
There should be minimal suspended objects in the liquid, such as crystallized particles, etc.
There should be minimal precipitation in the tank, such as mud, sand, etc.
2.Tank Material：Carbon steel, stainless steel. Various hard metals. Glass fiber-reinforced plastics. Epikote, rigid plastics, ceramics. Glass, ebonite. Other composite materials.
3.Tank Shape：Spherical, horizontal and vertical tanks are permitted.
External Ultrasonic Tank Level Sensor Working Principle
The External Ultrasonic Tank Level Sensor adopts the sonar echo ranging principle. It overcomes the influence of the tank wall on the transmission of ultrasonic signals. It adopts advanced digital signal processing technology. It can truly realize non-contact, high-precision measurement of the liquid level in the tank.
The External Ultrasonic Tank Level Sensor can output 4-20mA standard signals or output the measurement results to the upper computer (or secondary meter) through the RS-485 interface. It can meet the automatic control of the system.
If you need to measure river water level, open channel level, etc. The Ultrasonic Liquid Level Sensor can be used for non-contact continuous level monitoring.
External Ultrasonic Tank Level Sensor Installation
1.Precautions for installation of Tank Level Sensor main body:
There are 4 holes on the base of the main body. It can be fixed in different positions by bolts. The user can decide according to the working site.
When the instrument host is installed, it is recommended to use the instrument protection box in areas with relatively low temperature to prevent the instrument temperature from being too low.
In areas with high temperature, the instrument should be installed in a cool place to avoid excessive temperature in the instrument caused by exposure.
The display screen of the main unit of the instrument cannot be exposed to sunlight for a long time.
2.Precautions for sensor installation:
For iron containers, you can apply silicone grease to the working surface of the sensor and use a magnetic suction cup to directly tightly attach it to the bottom of the container.
If the container shell is made of glass and other materials, the sensor can be pasted and fixed with glue or fixed to the bottom of the container with a bracket.
- The direction of the sensor must be perpendicular to the measured liquid level.
- There are no obstructions such as coils directly above the sensor;
- Keep away from the liquid inlet at the bottom of the tank to avoid the influence of the violent flow of the liquid on the measurement;
- Keep away from the position below the liquid inlet on the top of the tank. Avoid the impact of the liquid inlet and the violent fluctuation of the liquid level to affect the measurement;
- It is higher than the liquid outlet or the sewage outlet. To avoid the influence of long-term deposits on the bottom of the tank on the measurement. If the conditions are not met, measures should be taken to ensure that the bottom of the tank is regularly removed;
- When the liquid level sensor is installed by magnetic or welding/adhesive fixing method. The installation surface size on the container wall should not be less than the round surface of ∅80. The surface roughness should reach 1.7. The inclination should be less than 3° (except the bypass pipe) .
4.Installation positions of sensors in different shapes
Horizontal tank: choose a position inside the tank bottom support and far away from the liquid inlet
For new tanks, if the manhole flange is not planned to be opened in recent years, and there is little liquid deposits, it is best to install it on the manhole flange. Because of the surface level, the signal is strongest.
When opening the inlet flange, remove the liquid level sensor first. After the inlet flange is installed and fixed, the liquid level sensor can be reinstalled.
If the deposits are not cleaned for a long time, a large amount of deposits may accumulate on the inner surface of the flange. In this case, the sensor installation position that can work stably for a long time is a circle around the manhole flange.
Here, the level is small, the sediment is small, and there is no rapid liquid flow interference. Although the signal for the new tank without sinking is not strong on the flange, it works stably for a long time.
Generally choose the installation groove far from the liquid inlet and outlet (more than 90°).
5.Installation of the calibration sensor
For spherical tanks equipped with a calibrator. The calibration sensor is installed at the center of the calibrator on the outer wall of the tank.
If the calibrator is not installed, the calibration sensor should be installed at the height of the outer radius of the tank (equatorial zone).
The calibration sensors for the vertical tank and the process tank are installed on the outer side of the tank body, at a height of 0.5m to 1m from the tank bottom.
Note: After installing the calibration tube (calibrator) in the tank, the correct installation position should be marked with paint on the outside of the tank wall in time.
Featured Tank Level Sensors
How does ultrasonic level sensor work?
When the ultrasonic liquid level sensor is working, the high-frequency pulse sound wave is emitted by the transducer (probe). It is reflected on the surface of the measured object (water surface). The reflected echo is received by the same transducer (probe) and converted into an electrical signal . The time between sending and receiving the pulse (the movement time of the sound wave) is proportional to the distance from the transducer to the surface of the object.
The relationship between the distance s of sound wave transmission and the speed of sound c and the transmission time t can be expressed by the formula: s=cⅹt/2
Acoustic wave is a kind of media that transmits information. It is closely related to mechanical vibration. The mechanical vibration produced by the impact and movement of objects spreads outward in the form of waves. According to the frequency of the wave generated by the vibration, it is divided into audible sound waves, infrasound waves and ultrasonic waves. The sound waves higher than 20khz are called ultrasonic waves.
Can ultrasonic sensor detect water level?
Yes, of course the water level can be measured with an ultrasonic level sensor.
For water depth detection, the water depth calculation can be found through the distance between the ultrasonic sensor transceiver and the water surface. The sensor will send a short ultrasonic pulse and measure the propagation time of the pulse to the liquid and back. Then calculate the total depth of the water tank and subtract this distance to determine the water depth.
This method of measuring with ultrasonic sensors more accurately describes water level measurement.
How to use an ultrasonic level sensor measures the level in the tank?
If the tank has an opening, we can use an integrated ultrasonic level sensor.
If the tank level signal needs to be transmitted remotely, we can use a split ultrasonic level sensor.
If the tank cannot be opened. You can use External Mounted Ultrasonic Tank Level Sensor.
If the tank is small, such as a CO2 tank, a portable ultrasonic level indicator can be used.
Sino-Inst offers over 10 Ultrasonic Tank Level Sensors for level measurement. About 50% of these are fuel level meters, 40% is the tank level sensor.
A wide variety of Ultrasonic Tank Level Sensor for level measurement options are available to you, such as free samples, paid samples.
Sino-Inst is a globally recognized supplier and manufacturer of Ultrasonic Tank Level measurement instrumentation, located in China.
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